SoundBreak XP Acoustically Enhanced Gypsum Board
|Soundbreak XP Gypsum Board is an acoustically enhanced gypsum board used in the construction of high STC wall assemblies. This innovative gypsum board allows for construction of high STC wall assemblies that are thinner, cost effective and more reliable than traditional methods for constructing these types of assemblies.SoundBreak XP Gypsum Board has an acoustically enhanced, high density gypsum core encased in a heavy, abrasion and mold/mildew/moisture resistant, 100% recycled, purple paper on both sides. Used in construction of high rated STC wall assemblies, SoundBreak XP consists of a layer of viscoelastic damping polymer sandwiched between two pieces of high density mold resistant gypsum board, providing constrained layer damping.|
Market Trends Driving The Need for Higher Rated STC Wall Partitions
Increasing land costs have resulted in larger amounts of high density multi-family housing in a growing number of United States housing markets. The result of high density housing is individual living units positioned closer together than traditional single-family housing.
Home theatre systems are becoming more prevalent in use and sophistication, resulting in the potential for more noise being transmitted between wall partitions. Commercial buildings such as schools, hospitals and hotels also have an increasing need to control sound between areas of a building.
All of these changing market dynamics have resulted in an increased need for higher rated Sound Transmission Class (STC) wall partitions, which reduce the transmission of airborne sound between living spaces within buildings.
What is an Acceptable STC Rating for a Wall Partition?
National Research Council of Canada Survey
General survey conclusions
J.S. Bradley, Deriving Acceptable Values for Party Wall Sound Insulation survey results
Design Considerations in Acoustical Wall Partitions
The goal of a high rated STC wall partition is to decrease the amount of sound transmission through the partition. The following five variables can have impact on the ability of the partition to provide this loss.
Increasing the mass of a wall partition increases the amount of sound transmission loss. Increasing mass in a cost and space effective way can be a challenge.
Increasing the stiffness of a wall partition will decrease the amount of sound transmission loss. For that reason metal studs outperform wood studs, and 24″ o.c. framing spacing outperforms 16″ o.c. framing spacing.
Introduction of damping will increase the amount of sound transmission loss. In particular, constrained layer damping can be effective for structure type applications.
Increasing the depth of the cavity of the partition can increase the amount of sound transmission loss, especially when the cavity is filled with acoustical insulation.
Adding sound-absorbing material such as fiberglass or mineral fiber insulation to the cavity of a partition will increase the amount of sound transmission loss. The sound-absorbing material should completely fill the cavity but not be compacted or compressed in any way.
How SoundBreak XP Gypsum Board Works
APPLICABLE STANDARDS AND REFERENCES
ASTM C 1396
ASTM C 1629
The 5/8″ SoundBreak XP Gypsum Board is tested in accordance with ASTM Standard E 119 and is classified as Type X for use in the following UL listings: U017, U301, U302, U305, U309, U326, U330, U332, U338, U339, U341, U342, U351, U354, U355, U356, U357, U358, U360, U364, U368, U369, U371, U379, U392, U405, U411, U418, U420, U425, U428, U429, U434, U439, U449, U450, U460, U465, U466, U475, U487, U494, U499, U505, U524, U525, U531, U646, U647, U648, U649, U651, U652, U926, V408, V415, V419, V420, V421, V425, V430, V432, V433, V434, V435, V438, V449, V450, V486, V483, V484, V488
5/8″ SoundBreak XP Gypsum Board: SoundBreak XP
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